Belt-shifting mechanism



Nov. 29, 1927. 1,651,254

A.J.CNOSSEN BELT SHIFTING MECHANISM Filed April 19, 1922 Patented 7 Nov. 29, 1927.

ANDIPEW J- ee se t es s m's ns M ssAcsvse ss ME H NI S Ap l ice tio fil d p i P, ,922. Serial No.555,618.

This invention relates to devices for shift ing a belt from one" pulley tc' anether. The int'entic'n isespeciall'y "cdnfierjlied with the e si-ems u "exist "in the belt dri'ying of 5 1"nachi1ife;sliaving -a grea't-deal of inertia, such, fQf example, asfli 'cardingmachines ased; in the textile industiy; "The 'cy' liiidei's Of these n'iacli'infe's' are heavy, andcpnsequently when such'a machine "is first'started upjth'e belt slips for a time until the pulley-on'vvhich the belt is lifhnnifng has "attained onsiderable speed: In ordeh to' reduce'thisslippage of the belt "a d'make the 'lnachinecome "up to speed more rapidly; it is customary for the machine attendantto press against the fiat f ce of the helt With-his 'liandg'as soon as the belt has been shifted, thus tightening I or tensionihg the belt sdlnewha't and there'fere increasing its grip on the pulley." This practice ohviou'slyis dangerous; and 'it is highly objectionable ibOtliitO the employers and also to insuranceceinpanies. T I

' his the chief object of the present invention to devise "a mechanism with :which this belt tensioning operatien canlb'e performed Without danger to the machine attendant. It is alsoan object ofthe in'ventionitodevise a mechanism which win operateiautomatically, both to shiftthe belt and also (to apply tension thereto, as just described. Theyinvention is fu'rher directed to the provisionef a device ofthischaracter whichicanhemanufactured eeoncmically,',will he r'eliable'in I U v i I I "lOis on the ld6se"pulley' 6, and the leyer 17 operatioinand will be i'convenient to use;

Thenatur'e ofthe invention w ii 'll be'readily understood from the following description Iandlthenovel features will he particulanly pointed out in the appended claims.

Referring now to the drawings,

Figure 1' is, aperspective View gf a 1necha- :nisni constructed in accerdance with the present invention, and sho yying the same "applied ;to a ca'rdingmachine; 7 i

- Fig.2 is a plan vie w, partly in cross sec- .ticn,;of.certain cf thepa 'ts shgwnin Fig. .1;

. -8: s de irie .1. e p em th bracket that supports theother parts of the chanism -;'I;he mechanism shown includes, abracket there t FeQ Y Qfie ".wh .iir.oje at the end of a cardihg.inachinefadj acentto' .tl1e i ns .p l yse .thehra cke Q the flange, Thefas aledlegse 2 cq nprising'aihead havihg a notch [or slot and the bracket 2 includes a shank"? that pr9ie s toward tliefastpulley*5i The belt sh pper forkisshdwii at 8 p'referably' is cf the closed typelsdthat it embm'cesthe'belt 10. 'An'eahll prcjeets from ene-sidebf this for'l: and"'isfa'cljustahly secured by rneahs of a bolt 13 to a"'simi la1 ear i2 haying ashank prd'jecting therefrcin into an arm -1 Where it is secured' by' a set seeew' a- This arm is ineunted rigidly o'n lever "comprising "a len e rpartm and upper part or handle 17. The handle is threaded into the pare-'16 and a 1'1ut"18, screived *dewn tightly i en "the shank Of the 'arin' ltyh'oldsthispart securely against a shoulder on the member '16. This bpeiating lever "is nlcun tedteswing in two planes at "rightangl'estd each 'other, the iew'e end cftheleifer being pivoted ona stud that prej ects radially from a collar 19, 'tvliich" is itself mounted-to rotate" on'a stud 20 secured fast inthe'lower end of theioart'T.

'A bracketf22issecufedin 2i stationary position by" means ofen' arm "23 which is bolted to 3 the liiiaiii" support" 2; and this hracketis previdedwithfltwc notches 25 and 26 designed t'c [held the lever {17 in either-bf its perative positions; is, i1'1"suc'hp 0sitions'thatthefbrk 8 \yil'lholdthe belt on either the faster loese" pulley. Between the notches 215 and'QG isan inclined slot 27, as clearly shown in thedrawings.

$0 'leng'as the'inachine'gis atrest, the belt "j reStiI 1 g "in the inetch 25 0f the bracket edby" dent d lines in Fi z-Q.

\ TWhen' it is desired to start the maehinefiinto eperation it is simply necessary to Flift the M61 17 out'ef the 'notc h' 25 anti allow lit to 'drep' into the 'slo't 272 "The "parts that piyot about the stud 20' are all relatively heavy, and consequently the weightcf the lever 17 and the paits nidvable therewith, cause it to slid' dofivn' the inclined left ha nd Wall, Fig. 2, of the S10E27. This slot is directed toward t he' riglitfa-s clearly shownin h5 6 thatthisinoveiiient autoniatically ireisults"in shifting "the" "belt Onto the fast pulley 5 sa'ifie time, -the- Weight-'j. 0f the parts connected withf' 'the "shipper fork 8 resse's this 1115 against Qthet-flat face of l the but 1'0 and" thus ex'elf tsa terisioning or 'ltightening action en the belt whieh increases ,lit ig tii ib i pulleys-are shown'at '5 and 6, respectively,"

ill

in starting it into operation.

lifting, each lever 17 outof the notch same way that this resultis produced by the hand of the workman. After the machine has come up to speed, it is simply neoessarv to lift the lever 17 out ot the bottom of the slot 2'7 and place it in the notch as, where it will be held withthe belt on the fast pulley. \Vhen it is desired to stop the machine, the lever 17 is lifted out of the notch it; and placed in the notch this movement being transmitted directly to the shipper tork b and resulting; in the transfer of the belt to the loose pulley (3.

lt will now be appreciated that this invention provides a very simple 'l'orm o'l'i belt shipper which acts automatically under the influence of gravity to shift the belt from the loose to the fast pulley and, sin'iultaneously, to tension the belt and thereby increase its grip on the fast pulley. The com struction is so simple that it can be manufactured verv economically and it not liable to gretout of order. It is especially valuable in avoiding; the necessity of the workman touching the belt with the conse quent danger of having his hand or clothing; caught in it.

Another important practi val :ulvantage of this mechanism that it does not require the presence of the attendant at any given machine for Any substai'itial length of time, The attendant simply goes from one machine to another, 2:") and dropping it into the slot 27. The shitting ot the belt takes place automatically and the machines comes up to speed. The workman then makes the round of the ma chines again, lifting each lever 17 into its running posi tion in the notch .26. A substantial s21 vinp; in time therefore is etl'ecled in getting the machines in a card room into production after each shut down.

\Vhile T have herein shown and described the best embodiment of the invention of which I am at present aware. it; will be appreciate'd that this einbmliment may he n1odi lied :ininany particulars without departing from the spirit or scope of this invention. It will also be ulnlerstood that while l, have shown an cn'ibodimont ot the invention de signed especially for use on carding: machines. and while it is particularly valuable on such machines. newrthclcss its use is not limited to this type of machine.

Having thus described my invention. what. I desire to claim as new is:

l. A belt sl'lippcr of the character de scribed, con'iprising. in combination, a. shipper i'ork, means operative to utilize gravity to move said fork to shift the belt, and simultaneously to tension said belt.

2. A belt shipper of the character described, comprising, in combination, a shipper fork, and means for utilizing g'avity to operate said fork to cause it to shift the belt and to bear against the tint face of the belt to tighten it.

3. A belt shipper oi the character deseriliied. comprising, in eon'ibination, a shipper 'lork, a. weighted part connected therewith, means for guiding: said part to cause its movement under the inllueme of gravity to shift said belt and simultaneously to press said :l'ork against the tint ilaec oi? the belt to tension the belt.

41. A belt shipper of the character described, comprising, in combination. a shipper tork, a part connected therewith, means supporting said part for pivotal movement to shift the .t'erk from one of its operative positions to another, means for holding said part in either of said positions, and a device For guiding: said part to cause its movement under the influence o't" gravitvto eli'eet said shiftingoperation.

A belt shipper oil the character desrmibed. comprising, in combination, a shipper fork. a weighted lever connected with said 't'ork. means su 'iportinp; said leverfor movement in planes at right angles to each other. a bracket having notehes therein to support said lever in either of its operative positions. and an inclined slot in said brackct between said notches. i

6. A belt shipper of the character describech comprising. in combination. a shipper fork. a weighted lever rigidly connected with said fork. a mainsupport, a double pivotal connection between the supportand lever enabling; the lever to move about two intersecting axes at right anglesto each other. the Weight of the lever and the parts connected therewith beinp so disposed that the lever tends to swing about one of said axes by gravity, a stationary bracket havinn: notches therein to support said lever in either of its operative positions. and an inclined slot in said bracket located between said: notches whereby when said leveris placed in the upper part of said slotit will slide down the slot under the influence of gravity and the inclination of said slot Will cause it to shift the belt.

7. Mechanism of the chanraeter described. comprising in combination a belt. a loose imllcv. a. last. pulley. a shipper fork, means For retaining the fork in alinement with the loose pulley. and means i'iperable automatically upon the release of said 'l'ork from said retaining mains to cause said fork to shift the belt and sinmltaneously to apply tension thereto.

8. ltlcehanism ot' the class described, inchuiin a shipper fork and a e uide adapted to cause said fork, underthe influence of gravity, to ship a belt and to apply tension thereto simultaneously.

9. In mechanism of the class described, a belt, a loose pulley and a fastpulley,

means operative automatically for shifting said belt from the loose to the fast pulley and for simultaneously applying tension to the belt, and means whereby said tension may be released Without transferring the belt from the fast to the loose pulley I 10. A belt shipper of the character described, comprising, in combination, ashipper fork, and a single mechanism operable automatically to move said fork to shift the belt and simultaneously to cause said fork to tension the belt.

'to more said fork transversely of the length of the belt to shift the belt and simultaneously to press said fork against one flat face only of the belt to tension the belt.

ANDREW J. CNOSSEN. 

